1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Read CopyrightID inside OTSCanonicalRecord → must equal the CopyrightID above 5. GET OTSVerificationAPI → pre-computed 6-check result from server 6. If all match: this entity was registered on CopyrightChains at OTSTimestamp, independently verifiable on Bitcoin
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b55fa333d42540c8088795c5bfc0bd10033bbbd0377ea55e053f87a0e19495e. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/8397c870-42a9-4686-80cc-3d9645c1aba2.json and https://artists.proofprofile.net/proofs/artist/8397c870-42a9-4686-80cc-3d9645c1aba2.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98da65e71eeb52b3037b757b4029b2c617d86765ce87d9c9f9d62789dc7945c3. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/AUEMB1500003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a23f11d533b7d0faeb7facbc48a144fae6ec4272ddb3005dad5ac8d5d2d74ef. Chain 2 (Bitcoin): anchored in block 958951 (2026-07-21T04:50:33Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/AUEMB1500005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28c0d29d4154829214233dfd11bf97ee26c0180a8bc0db6f4bbe2003d3a14c85. Chain 2 (Bitcoin): anchored in block 958397 (2026-07-17T10:29:45Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/AUEMB1500001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a9501161205da9e1f0173937daae4b9dea26e276bdcb92c514974dd29111d38. Chain 2 (Bitcoin): anchored in block 956500 (2026-07-03T13:55:21Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/AUEMB1700001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea2969dbcf434a7fc835e3148a9aa91d176b11a9d0fd84a0cf042fe43af5547d. Chain 2 (Bitcoin): anchored in block 958686 (2026-07-19T06:43:29Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/AUBEC1708524.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28094a801fdd76cca83fbd2803125c293b3e159fea88e56e91eb6ce761efb23a. Chain 2 (Bitcoin): anchored in block 958211 (2026-07-15T23:24:33Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/AUBEC1708532.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98300d4b5da7336a35adf444277a5f2eff056e4b3db026fd8afe9813ca42e75b. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/AUBEC1828411.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a9c3619c34cbed7011759eacfd158f1e499dbf89926ca79ba478dd1a6386f1e. Chain 2 (Bitcoin): anchored in block 958271 (2026-07-16T09:16:54Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/AUVYV1900011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd30d336e2f1713323449d5d5117878862c14eef09e350964de9804236e60266b. Chain 2 (Bitcoin): anchored in block 958686 (2026-07-19T06:43:29Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/AUVYV1900010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe21d177556a7074cde7cbdb80b41c7f4e78d02a425f15447bcd34683ce5a1705. Chain 2 (Bitcoin): anchored in block 958455 (2026-07-17T21:28:36Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/AUVYV2200048.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x298058dfac38d10ba59c883683cac605f58bf69f2ddf1c7ea62b75c44b428506. Chain 2 (Bitcoin): anchored in block 958170 (2026-07-15T17:47:27Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/AUVYV2200049.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e5ed5b116be58e1365aa85ad5667ed439159e5a666e4c48e5d2deeca1d3786e. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/AUVYV2000024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0fc95a97456beca7992886ea1222a909ba7bb628b5b70a5359e4e4d438b1bc87. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/AUVYV2200055.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0210b678f85e95a2d62bbe454c1f2220172c7a8e9ab8bad319f004825124aaa. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/AUVYV2300097.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c4d21aeab4e8dc4192c5909b631882452b1271219422c9cfea64f8702ff70f6. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/AUVYV2400105.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1e5e4face051d162cf376f107b6a6fd4b0be132d459b4b7dec43fb0ac8c8a9f. Chain 2 (Bitcoin): anchored in block 958349 (2026-07-17T02:28:59Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/AUVYV2400111.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbbd5edd800cf57f7c63d8968fea0fec079665db9d9b695c675c9bbe4a5d2c386. Chain 2 (Bitcoin): anchored in block 958612 (2026-07-18T21:29:37Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/AUVYV2300099.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x354804ef506944d4966dfef82e68ed2ed4ed72524b98541f4db268ff8d3859aa. Chain 2 (Bitcoin): anchored in block 958686 (2026-07-19T06:43:29Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/AUVYV2300073.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x340a824b107c79a083e5b342e3490d68db25d51e11ecb4cd18412b9a50dbde47. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/AUVYV2400114.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34fb7ae678b197b4a6973544fb8b31f0a3c682d348e200eb62c6ebecbea8b929. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/AUMEV2177497.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18b9bc2b02668610d08e229db99b9b239c4cc47da90abf916541f17314e92869. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/AUGBT2218820.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c22e0d7801e9b44116049784e1539bf4e6b2b73e762a656edccaab6f682b98d. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/CAN112000546.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c22e0d7801e9b44116049784e1539bf4e6b2b73e762a656edccaab6f682b98d. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/CAN112000546.